public class Per_Num_Test{
	
	public static void main (String[] args) {

		System.out.print("1000以内的完数为: ");
		for (int i = 2; i <= 1000; i++){
			int sum = 0;
			for (int j = 1; j < i; j++){
				if(i % j == 0){
				    sum += j;
				}
			
		    
            }
			if (sum == i){
				System.out.print(i + " ");
				
			}
		}
		System.out.println();

	}
}